Antonsson et al., "A System for Automatic Visual Inspection of Printed Circuit Boards" Internskrift, Linkoping University, Lith-Isy-I-0264 (Jan. 16, 1979) pp. 1-22. |
Danielsson et al, "Distance Checking Algorithms", Internskrift, Linkoping University, Lith-ISY-I-0175,(9/21/1977), pp. 1-61. |
"Optical Pattern Recognition", Proceedings of the Society of Photo-Optical Instrumentation Engineers, vol. 201, Aug. 29-30, 1979, San Diego, Calif., Wm. A. Bentley (The Inspectron: An Automatic Optical Printed Circuit Board (PCB) Inspector). |
"An Automatic Optical Printed Circuit Inspection System", Restrick, Robert, SPIE, vol. 116 Solid State Imaging Devices (1977). |
"Distance Checking Algorithms", 9/21/77, by Erik Danielsson and Bjorn Kruse, Linkoping University, Sweden Department of Electrical Engineering. |
"Automated Optical Inspection of Multilayer Printed Circuit Boards", Wm. A. Bentley, 102/SPIE, vol. 220, Optics in Metrology and Quality Assurance (1980). |